CORALS FROM THE CORAL RAG. 83 



M. orhltolltes, and M. cleformis, are discoid or subdiscoid ; M. temiUameUosa^ and 

 M. dilatatd are conical, but very short and broad ; 11. Waterhoimt^ is rather tall, but almost 

 cylindrical and regularly convex at its basis, and free ; M. Smithi^ and M. cwpuliformii 

 are fixed by a very broad basis ; and M. coiiforfa'^ is very tall and irregularly bent. 



The fossils described by M. Michelin under the names of Anthoph^Ilum excavatum^ 

 Canjoplujllia subci/Iindrica,^ C. elongata^ C. cornuta}^ C. vasiformis^^ and Lohoplnjllia 

 inmban^'" ; by Goldfuss under the name oi AtithopJiijUum turhinatwm}'^ and by Roemer under 

 the name of Anthophjllmn explanatmn}'^ as well as some small specimens from St. Cassian, 

 figured by Munster, appear also to belong to this genus, and differ from M. dispar by 

 their form, but are not sufficiently characterised when compared with some of the preceding 

 species. We must also add that the Carijopltijllia Moreausiaca of M. Michelin is very 

 imperfectly known, and we are not acquainted with the characters that distinguish it from 

 J/, dispar. 



This fossil is found at Malton, Yorkshire, and at Bridport. A specimen belonging to 

 the Museum of Natural History, in Paris, and obtained at Damvilliers, in the department 

 of the Meuse, appears to belong to the same species. There is also in M. Michelin's 

 collection a coral from Is-sur-Thil in the department of La Cote d'Or, which may be 

 referred to the M. dispar ; and M. D'Orbigny mentions the same species as having been 

 met with in the island of Re, on the west coast of France. The British specimens which 

 we have examined belonged to the collections of the Geological Society of London, the 

 Cambridge Museum, Professor J. Phillips, Mr, Bowerbank, and the celebrated cabinet 

 formed by Goldfuss in the Poppelsdorf Museum, at Bonn. 



' Tab. xxvi, fig. 1 1. 



2 Caryophyllia dilatata, Miclieliii, Icon., p. 90, tab. xvii, fig. 4. Although this figure does not show 

 the epitheca which is so highly developed in Montlivaltia, we refei'ied the species to that generical division 

 in our Monograph of the Astreidse, 'Ann. des So. Nat.,' s. 3, vol. x, p. 260, and since the publication of 

 that work, we have been able to ascertain the propriety of so doing. We have seen, in the collection of 

 M. Buvignier, some specimen found in the Coral Rag of Chaumont, and having the wall completely covered 

 with a thick epitheca. M. D'Orbigny has mentioned this species as the type of his genus Lasmophyllia, 

 the characters of which do not diiier from those of our genus Trochosmilia, and it appears very probable 

 that all the fossils which that palaeontologist refers to his new generical group, are in fact species of 

 Montlivaltia, the epitheca of which has been accidentally worn off, as is the case wiih the CaryopJiijUia 

 dilatata described by M. Michelin. 



3 Tab. xxvii, fig. 7. * Tab. xxi, fig. 1. ^ x-ii,. vxvii, lig. 1. 

 ^ D'Orbigny, Prod., vol. ii, p. 30. 



7 Michelin, Icon., pi. xvii, fig. 10, (non Roemer.) ^ lb., figs. 2, 3. '•' lb., fig. 7. 



10 lb. fig. 19. " lb., fig. y. 12 iij.^ fig. 2. 



1'^ Goldfuss, Petref. Germ., vol. i, tab. xxxvii, fig. 13. 

 ^'^ Verst. des Norddeutscheu ool. geb., tab. xvii, fig. 21. 



